如果达到数据库记录限制返回到上一页的消息

Question

我构建了我们的会员级别，每个人都有限制可以保存到数据库的记录数。 laracasts上的某人表示我想检查observer中的会员级别限制，如果达到限制，则将其重定向到上一页并显示错误。

这似乎是工作，除了它重定向的限制已达到并创建记录的消息。理想情况下，如果达到限制，则不应创建记录。我不知道我在做什么错，我也试图return false;而不是return back();，但那也没用。

（通过，如果有一个更简单的方法来做到这一点的方式，我所有的耳朵）

这里是我的观察：

<?php 

namespace App\Observers; 

use App\Company; 
use Auth; 
use Session; 

class SubscriptionLimits { 

    public function __construct(){ 
     $this->company = Auth::user()->company_id; 
    } 

    public function creating() 
    { 
     try { 
       $company = Company::find($this->company); 

       $clients = \App\Client::where(['company_id' => $this->company])->count(); 
       $contacts = \App\Contact::where(['company_id' => $this->company])->count(); 
       $leads = \App\Lead::where(['company_id' => $this->company])->count(); 
       $opportunities = \App\Opportunity::where(['company_id' => $this->company])->count(); 
       $invoices = \App\Invoice::where(['company_id' => $this->company])->count(); 
       $estimates = \App\Estimate::where(['company_id' => $this->company])->count(); 
       $proposals = \App\Proposal::where(['company_id' => $this->company])->count(); 
       $projects = \App\Project::where(['company_id' => $this->company])->count(); 
       $tasks = \App\Task::where(['company_id' => $this->company])->count(); 
       $boards = \App\Board::where(['company_id' => $this->company])->count(); 
       $bulletins = \App\Bulletin::where(['company_id' => $this->company])->count(); 
       $cards = \App\Card::where(['company_id' => $this->company])->count(); 
       $lineitems = \App\LineItem::where(['company_id' => $this->company])->count(); 
       $notes = \App\Note::where(['company_id' => $this->company])->count(); 
       $timer = \App\Timer::where(['company_id' => $this->company])->count(); 
       $templates = \App\Template::where(['company_id' => $this->company])->count(); 
       $userExtra = \App\UserExtra::where(['company_id' => $this->company])->count(); 

       $count = $clients + $contacts + $leads + $opportunities + $invoices + $estimates + $proposals + $projects + $tasks + $boards + $bulletins + $cards + $lineitems + $notes + $timer + $templates + $userExtra; 

       if($count >= 5 && !$company->subscriptions){ //Free tier throw error because limit is reached 
        //return false; //Works but throws error 
        Session::flash('error', 'You have reached your record limit, please <a href="/order">upgrade now</a> to continue'); 
        return back(); 
       } 

       if($company->subscribed('middle_tier_monthly_per_user') || $company->subscribed('middle_tier_annual_per_user')){ 
        if($count > 10){ //If middle tier and limit is reached 
         //return false; //Works but throws error 
         Session::flash('error', 'You have reached your record limit, please <a href="/order">upgrade now</a> to continue'); 
         return back(); 
        } 
       } 
      } catch (Exception $e) { 
       Session::flash('error', 'You have reached your record limit, please <a href="/order">upgrade now</a> to continue'); 
       return back(); 
      } 
    } 

} 

更新问题 Here is a video，这不应该让我创建一个记录，而应该返回达到的限制消息并提示我升级。

Answer 1

您不会在观察者上重定向。观察者只是为了在数据写入数据库之前拦截数据。

您将在将数据保存到数据库的控制器上重定向。

在你的控制器： 所有的`

function store(){ 
    if(!$model->save()) redirect()->back(); 
     return redirect()->to('#url'); 
} 

`

Answer 2

只要在每个'如果'的dd（），并让我知道哪里是条件失败通过采取1额外的记录。